Internal combustion engine



June 27, 19330 BRUSH 1,915,977

INTERNAL COMBUSTION ENGINE Filed Oct. 20, 1930 5 Sheets-Sheet 2 INVENTORI 1 ATTORNEYS A. P. BRUSH INTERNAL COMBUSTION ENGINE June 27, 1933.

Filed Oct. 20, 1930 3 Sheets-Sheet 3 A a/5M ATTORNEYS Patented June 27,1933 UNITED STATES ALANSON P. BRUSH, OF Di)TRC Il'L", MICHIGAN INTERNALCOMBUSTION ENGINE Original application filed September 9, 1929, SerialNo. 391,419. Divided and this application filed October 20, 1930. SerialNo. 490,070,

The invention relates'to multi-cylinder internal combustion engines ofthe V-type and forms a divisional of an earlier filed application SerialNo. 391,419, filed September 9, 1929. The invention consists in themeans employed for driving accessory devices as hereinafter set forth.

In the drawings:

Figure l is a vertical cross section;

Figure 2 is a longitudinal section broken away to show parts indifferent planes;

Figure 3 is a cross section on line 33 of Figure 2 illustrating the pumpand distributor mechanism and manner of driving the same.

In the present state of the art in the construction of internalcombustion engines it has been found impracticable to arrange more than.eight cylinders in alignment or in a single plane. here a large numberof cylinders is desired the double bank or V type construction may beused, but this increases complication and costof manufacturing. WVith myimprovement I combine certain advantages in the aligned type of enginewith those secured by the V type, particularly with respect tosimplicityin construction, reduction in the number of parts and incompactness of arrangement.

My improvements are applicable to engines with any number of cylindersbut are particularly advantageous in engines havlng more than eightcylinders, as for instance twelve or sixteen, the construction-being asfollows: I

A and A are two banks of aligned cylin ders in an integral block andhaving their axes arranged at a limited angle to each other, preferablythirty degrees. The integral block also includes a crank case B which isof the width of the two banks of cylinders at their lower ends andextends downward below the plane of the crank shaft, being provided withflanges C for the attachment of the oil pan 1). The top and bottom facesof the block are paralleland in horizontal planes which makes the upperface intersect the cylinders at an oblique angle resulting in wedgeshaped clearance spaces E above the pistons, the large ends of theWedges being on the outer side. This givesroom for the insertion of thespark plugs F which are thus directly attached to the block independentof its removable head. j i

For closing both banks of cylinders I employ a single head G having ahorizontal lower face abutting against the upper face of the block andsecured thereto by suitable bolts H. The head G has formed therein theinlet and exhaust valve ports I which are arranged in alignmentlongitudinally of the block and substantially centrally with respect tothe axes oft-he cylinders. J are the valves for controlling these portswhich are substantially flush with the lower face of the 5 head G andhave the axes .of their stems K arranged perpendicular to this face Theupper face of the head G is parallel to the lower face and has centrallymounted thereon at spaced points bearings L having cam shafts M, thesebearings being secured to the head by bolts L. The valve stems K.project upward beyond theupper face of thejhead G being provided withvalve springs N and collars N of any suitable construction. Intermediatethe cam shaft M and the respective valve stems are rockers O which arecentrally fulcrumed at 0, their inner ends being provided with rollers Ofor engagement with a cam and their outer ends 39 bearing on the upperends of the stems K to 1provide for adjustment and seating of the vaves. The rockers O are longitudinally slotted at O to leave acomparatively thin and flexible section 0 which carries the bearing 0engaging the valve stem. Above the slot 0 is a rigid portion in which isarranged an adjustment screw 0 bearing against the portion 0 and held inits position of adjustment by a lock nut 0 This simple arrangementpermits of direct engagement of the rocker with the cam and the valvestem while providing for setting and adjustment of the valves.

The valve. mechanism just described is enclosed in a housing or cover Presting upon the upper face of the head G and secured thereto by boltsP. On opposite sides of this housing P are the inlet and exhaustmanifolds Q, which preferably engage the 9 upper faces of lateralextensions G of the head, being coupled thereto by the bolts Q. Thespecific construction of these manifolds is not essential to the presentinvention and therefore will not be described in detail.

The pistons R are connected to the crank shaft by rods It so constructedas to permit of insertion and removal through the. upper ends of thecylinders, and the rods for the adjacent cylinders of the opposite banksengage the same crank. Separate distributors S are used for each bank ofcylinders and these are arranged at an oblique angle on opposite sidesof the block. For driving the distributors and also for driving the oilpump I arrange a single ring gear T which is mounted on one of thethrows T of the crank shaft. The distributor shafts U are located in thesame transverse plane as this ring gear and are so arranged that thegears U thereon will intermesh with said ring gear. The shafts U arejournaled in bearings U which together with the gears U maybe insertedlongitudinally through quills U formed integral with the block. Thebearings U also form sockets for receiving the shank S of thedistributor casing and all parts are held in position by the lock screwsU inserted laterally through the quill.

The oil pump V has its drive shaft V arranged in axial alignment withthe shaft U and suitably coupled thereto. The pump casing is bolted at Vto a suitable bearing on the block and extends downward into the oil panwhere it is arranged substantially centrally thereof. Thus the singlering gear T serves as a driving means for both distributors and both oilpumps.

\Vhat I claim as my invention is:

1. In a multi-cylinder internal combustion engine, the combination withan integral V block having two oppositelyangling banks of cylinders anda crankcase, of a crank shaft journaled in said crank case, a singlegear surrounding one of the crank throws intermediate pairs ofcylinders, a shaft extending obliquely of said crank case and outwardthrough an aperture in the side wall thereof in the plane of said gear,a gear on said shaft intermeshing'with said first mentioned gear and adistributor and pump driven by said shaft respectively located outsideand inside said case.

2. In a multi-cylinder internal combustion engine, the combination withan integral V block having oppositely angling banks of cylinders and acrank case a crank shaft ournaled in said crank case, a gear surroundingone of the throws of said crank shaft and mounted thereon anddistributor and pump shafts arranged obliquely on opposite sides of thecrank case in the plane of said gear,

each of said shafts having a gear mounted thereon which intermeshes withthe said first mentioned gear.

3. A multi-cylinder internal combustion engine comprising an integral Vblock having two oppositely angling banks of cylinders and a crank case,an oil pan beneath said crank case, a crank shaft in said case, a ringgear surrounding one of the throws of the crank shaft and mountedthereon, a shaft extending obliquely to said crank case in the plane ofsaid ring gear, a gear on said shaft intermeshing with said ring gear,an oil pump in said oil pan engaging and driven by the lower end of saidshaft, and a distributor outside of said block engaging and driven bythe upper end of said shaft.

1. In a multi-cylinder internal combustion engine the combination with aV-block and a crank case, of a crank shaft journaled in said crank case,a gear in the plane of one of the throws of said crank shaft surroundingand mounted thereon, and a shaft for driving an accessory having a gearthereon intermeshing with said first mentioned gear in the planethereof.

5. In a multi-cylinder internal combustion engine the combination with aV-block and a crank case integral therewith, of a crank shaft journaledin said crank case, a gear surrounding one of the crank throws, anobliquely extending apertured bearing in said crank case in the plane ofsaid gear, a dis tributor outside the crank case and a shaft and gearfor said distributor insertable through said apertured bearingintooperative engagement with the gear surrounding the crank throw.

6. In amulti-cylinder internal combustion engine the combination with aV-block and a crank case integral therewith, of a crank shaft journaledin said crank case, a gear surrounding one of the crank throws andmounted thereon, a distributor assembly including a distributor casing,a shaft, a hearing for said shaft and a gear on said shaft and anobliquely extending quill integral with said crank case in the plane ofthe gear on said crank throw, said quill forming a mounting for saiddistributor casing and bearing through which the gear on said shaft isinsertable into operative engagement with the gear on said crank throw.

7. In a multi-cylinder internal combustion engine the combination with aV-block and a crank case integral therewith, of a crank shaftjournaledin said crank case, a gear surrounding one of the throws ofsaid crank shaft and mounted thereon, a distributor assembly comprisingthe casing, a shaft, a gear on said shaft, a bearing for said shafthaving an external diameter greater than that of said gear and anobliquely extending quill integral with the side wall of said crank casein the plane of the gear surrounding said crank throw, said quill beingadapted for the insertion of said distributor shaft and geartherethrough into operative relation to the crank throw gear and forminga mounting for the distributor outside the crank case.

8. In a multi-cylinder internal combustion engine, the combination witha Vs-block and a crank case integral therewith, of a crank shaftjournaled in said crank case, a gear surrounding one of the throws ofsaid crank shaft and mounted thereon, a distributor assembly including acasing, a shaft, a gear wheel on said shaft and a bearing for said shafthaving an external diameter in excess of that of said gear, an obliquelyextending quill integral with the side wall of said crank case in theplane of said crank throw gear, said quill being adapted for themounting of said bear-' ing therein and permitting the insertion of thedistributor shaft and gear therethrough into operative engagement withthe crank throw gear, a pump and an operating shaft therefor having acoupling engagement with said distributor shaft, a supporting bearingfor said pump mounted on said crank case and an oil pan secured to saidcrank case for receiving said pump and supporting bearing.

9. In a multi-cylinder internal combustion engine, the combination witha V-block and a crank case integral therewith, of a crank shaftjournaled in said crank case, a gear surrounding one of the throws ofsaid crank shaft and mounted thereon, obliquely extending quillsintegral with the opposite side walls of said crank case in the plane ofsaid gear, distributor assemblies mounted in said quills, each having ashaft and gear insertable through the quill into operative engagementwith the crank throw and gear, a pump having a shaft coupled with one ofsaid distributor shafts, a mounting for said pump on said crank case andan oil pan for said crank case receiving said pump and its mounting.

10. In a multi-oylinder internal combustion engine, the combination witha U-block having a crank case integral therewith, of a crank shaftjournaled in said crank case, a gear surrounding one of the throws ofsaid crank shaft and mounted thereon, an obliquely extending quillintegral with a side wall of said crank case in a plane of said gear, adistrib utor assembly mounted in said quill and having an operatingshaft and gear insert-able through the quill into engagement with saidcrank throw gear, an oil pan and a pump within said oil pan having ashaft coupled with said distributor shaft to be driven thereby.

In testimony whereof I afiix my signature.

ALANSON P. BRUSH.

